Atlus has given owners of Etrian Odyssey IV the ability to access special items and side quests by scanning select QR codes with their 3DS camera. To use the codes, follow these simple steps:

Launch Etrian Odyssey IV on your 3DS.

Gain access to the Cargo Wharf from the main plaza menu in Tharsis. (You must first have completed the tutorial mission and cave and have obtained your Skyship.)

Select "Read Code" from the Cargo Wharf options.

The game will enter Camera Mode and the screen will change to show the outer camera's view.

Hold your Nintendo 3DS system up to the QR code until you receive a confirmation message that you have received a QR Code item, either placed in your inventory or now available for purchase at the Berund Atelier.